vagrant - Centos7 私网丢失固定IP

Question

我有一个 centos7 vagrant box 的网络问题。
当我设置一个具有固定 IP 的专用网络时，这个网络首先绑定(bind)得很好，但在几秒钟/几分钟后就会丢失。

 vagrant up
 ==> default: Forcing shutdown of VM...
 ==> default: Destroying VM and associated drives...
 ==> default: Running cleanup tasks for 'shell' provisioner...
 Bringing machine 'default' up with 'virtualbox' provider...
 ==> default: Importing base box 'sfeirbenelux/centos7'...
 ==> default: Matching MAC address for NAT networking...
 ==> default: Checking if box 'sfeirbenelux/centos7' is up to date...
 ==> default: Setting the name of the VM: poc_docker
 ==> default: Fixed port collision for 22 => 2222. Now on port 2200.
 ==> default: Clearing any previously set network interfaces...
 ==> default: Preparing network interfaces based on configuration...
     default: Adapter 1: nat
     default: Adapter 2: hostonly
 ==> default: Forwarding ports...
     default: 22 => 2200 (adapter 1)
 ==> default: Running 'pre-boot' VM customizations...
 ==> default: Booting VM...
 ==> default: Waiting for machine to boot. This may take a few minutes...
     default: SSH address: 127.0.0.1:2200
     default: SSH username: vagrant
     default: SSH auth method: private key
     default: Warning: Connection timeout. Retrying...
     default:
     default: Vagrant insecure key detected. Vagrant will automatically replace
     default: this with a newly generated keypair for better security.
     default:
     default: Inserting generated public key within guest...
     default: Removing insecure key from the guest if its present...
     default: Key inserted! Disconnecting and reconnecting using new SSH key...
 ==> default: Machine booted and ready!
 ==> default: Checking for guest additions in VM...
     default: The guest additions on this VM do not match the installed version of
     default: VirtualBox! In most cases this is fine, but in rare cases it can
     default: prevent things such as shared folders from working properly. If you see
     default: shared folder errors, please make sure the guest additions within the
     default: virtual machine match the version of VirtualBox you have installed on
     default: your host and reload your VM.
     default:
     default: Guest Additions Version: 5.0.2
     default: VirtualBox Version: 4.3
 ==> default: Setting hostname...
 ==> default: Configuring and enabling network interfaces...
 ==> default: Running provisioner: shell...
     default: Running: inline script
 ==> default: net.ipv4.ip_forward = 1
 ==> default: Setting up swapspace version 1, size = 2097148 KiB
 ==> default: no label, UUID=170723d8-1782-4915-a877-4d9874ac7396
 ➜  install git:(master) ✗ ping 192.168.100.20
 PING 192.168.100.20 (192.168.100.20): 56 data bytes
 64 bytes from 192.168.100.20: icmp_seq=0 ttl=64 time=0.390 ms
 64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.252 ms
 64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.461 ms
 ^C
 --- 192.168.100.20 ping statistics ---
 3 packets transmitted, 3 packets received, 0.0% packet loss
 round-trip min/avg/max/stddev = 0.252/0.368/0.461/0.087 ms
 ➜  install git:(master) ✗ ping 192.168.100.20
 PING 192.168.100.20 (192.168.100.20): 56 data bytes
 64 bytes from 192.168.100.20: icmp_seq=0 ttl=64 time=0.273 ms
 Request timeout for icmp_seq 1
 Request timeout for icmp_seq 2
 Request timeout for icmp_seq 3
 Request timeout for icmp_seq 4

有了这个 Vagrant 文件:

vagrant.configure(2) do |config|

 config.vm.box = "centos7"
 config.vm.hostname = "docker-registry"
 config.vm.box_url = "https://github.com/holms/vagrant-centos7-box/releases/download/7.1.1503.001/CentOS-7.1.1503-x86_64-netboot.box"

 #config.vm.network "public_network"
 config.vm.network "private_network", ip: "192.168.100.20"
 #config.vm.synced_folder ".", "/vagrant", type: "nfs"

 # VirtualBox
 config.vm.provider :virtualbox do |vb|
   vb.name = "poc_docker"
   vb.memory = 3072
   vb.cpus = 2
   vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
   vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
 end


end

当我在盒子上连接时，似乎ip丢失了。

sudo /sbin/ifup eth1

暂时解决问题，但有时IP又会丢失。
重新启动盒子(vagrant halt && vagrant up)似乎可以永久解决问题。
我尝试使用 Packer ( https://atlas.hashicorp.com/sfeirbenelux/boxes/centos7 ) 创建一个自定义的 centos 7 盒子，我也重现了这个问题。

我想这是 Centos 7 的特定问题？
你已经有同样的问题了吗？有没有办法通过添加 vagrant 命令来解决这个问题？

我的环境:

OS X 优胜美地
➜ ~ vagrant --version
Vagrant 1.7.2
➜ ~ VBoxManage --version
4.3.26r98988

Answer 1

在较新的 Vagrant 版本(1.9.1)中似乎存在类似的问题。

修复问题的拉取请求已经合并(尚未发布):

https://github.com/mitchellh/vagrant/pull/8148

如果你想应用该修复，你可以试试这个( sudo 可能需要，取决于文件权限):

找到本地 Vagrant 安装(在 Fedora 上是 /opt/vagrant/ )

移动到 vagrant gem 的文件夹:

cd embedded/gems/gems/vagrant-1.9.1

初始化一个新的 Git 存储库并添加 GitHub 远程:

git init
git remote add origin https://github.com/mitchellh/vagrant.git
git fetch --all

checkout 一个新分支并将其重置为您当前的版本(例如 1.9.1)。

如果您不确定是否有本地更改，请执行 不是 使用 --hard做一个git diff/git checkout重置后:

git checkout -b hotfixes
git reset --hard v1.9.1

现在应用修补程序:

git cherry-pick 96611341a96d7d19fdade5556a110b22c6add22b

之后是 vagrant reload应该可以很好地启动本地网络。